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Griffin Lp(north) over W.br.little Wood River

Blaine County, Idaho · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Griffin Lp(north) over W.br.little Wood River in Blaine County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1959 and reconstructed in 2007, making it 66 years old at the 2025 inventory.
It carries about 30 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 65 of the 96 inventoried bridges in Blaine County rated fair (67.7%); 4 (4.2%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 23 ft
Location	1.6 S. 0.2 E. Carey
NBI structure number	000000000023685
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.

Bridge	Built	Vehicles/day	Condition
SH 75 over Big Wood River	2002	14,500	Good
SH 75 over Big Wood River	2017	14,500	Fair
SH 75 over Bellevue Canal	1931	7,000	Fair
STC2815;WARM Sprng over Big Wood River	1972	6,300	Fair
Dollar Road over Trail Creek	1988	5,000	Good
SH 75 over Richfield Canal	1955	4,500	Fair